Question

Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.
Topic: Acids, Bases and Salts Acids, Bases and Salts

Answer 1

Turmeric is yellow in neutral solution.

Turmeric is yellow in acidic solutions.

Turmeric is red in basic solution.

So, when it reacts with HCl it will remains yellow, when with NaOH it will turn into red color, while it will remain yellow in sugar solution.

Answer 2

Place a drop of each liquid on turmeric indicator. The solution which changes the colour of the indicator to red is basic in nature, i.e., it is sodium hydroxide. .While the mixture which does not show any colour change in indicator contains hydrochloric acid which was neutralised on addition of sodium hydroxide.